Strap for Day-Date 40 Yellow Gold - Diamond / Green - Ombré

The lug width of the Day-Date 40 reference 228348RBR-0045 is 20 millimetres. This measurement is critical for aftermarket strap compatibility. To verify accurately, measure from inside to inside of the lug convexity using a digital calliper or flexible ruler, perpendicular to the case closing ring.

Alligator remains the optimal choice for this model: the natural texture and vivid grain emphasise the precious metal character of yellow gold, whilst patina evolves over time creating a personal signature. Recommended hues: golden, light brown, cognac. Alternatively, vegetable-tanned calf offers daily softness and predictable ageing, whilst shell cordovan in burgundy creates refined colour contrast.

Remove the current strap by releasing the spring bars located inside the lugs using a dedicated tool (removable pin or specific extractor). Insert the new strap by aligning the holes with the lugs and secure the spring bars. Verify that the strap is firmly locked before wearing the watch. If you wish to avoid risk of scratching, consult a professional watchmaker.

Yes, any strap with a 20mm lug width is compatible with the Day-Date 40 reference 228348RBR-0045. However, always verify the width before purchase and ensure the strap is suitable for the case diameter and style (40mm yellow gold). Milano Straps 20mm straps are tested for compatibility with this model.

The lifespan of a leather strap depends on usage, climate and material. Quality alligator or calf can last between 3 and 7 years with proper maintenance (moderate water and humidity exposure, cleaning with soft cloth, rapid drying if wet). Shell cordovan tends to last longer due to superior fibre density. An 18-month warranty on manufacturing defects is standard for artisanal straps of excellence.